用于自适应光学扫描激光检眼镜的主动眼动追踪
Active eye-tracking for an adaptive optics scanning laser ophthalmoscope.
作者信息
Sheehy Christy K, Tiruveedhula Pavan, Sabesan Ramkumar, Roorda Austin
机构信息
Vision Science Graduate Group, University of California, Berkeley; Berkeley, CA 94720, USA ; School of Optometry, University of California, Berkeley; Berkeley, CA 94720, USA.
School of Optometry, University of California, Berkeley; Berkeley, CA 94720, USA.
出版信息
Biomed Opt Express. 2015 Jun 12;6(7):2412-23. doi: 10.1364/BOE.6.002412. eCollection 2015 Jul 1.
We demonstrate a system that combines a tracking scanning laser ophthalmoscope (TSLO) and an adaptive optics scanning laser ophthalmoscope (AOSLO) system resulting in both optical (hardware) and digital (software) eye-tracking capabilities. The hybrid system employs the TSLO for active eye-tracking at a rate up to 960 Hz for real-time stabilization of the AOSLO system. AOSLO videos with active eye-tracking signals showed, at most, an amplitude of motion of 0.20 arcminutes for horizontal motion and 0.14 arcminutes for vertical motion. Subsequent real-time digital stabilization limited residual motion to an average of only 0.06 arcminutes (a 95% reduction). By correcting for high amplitude, low frequency drifts of the eye, the active TSLO eye-tracking system enabled the AOSLO system to capture high-resolution retinal images over a larger range of motion than previously possible with just the AOSLO imaging system alone.
我们展示了一种将跟踪扫描激光检眼镜（TSLO）和自适应光学扫描激光检眼镜（AOSLO）系统相结合的系统，该系统兼具光学（硬件）和数字（软件）眼动跟踪功能。该混合系统采用TSLO以高达960 Hz的速率进行主动眼动跟踪，以实现AOSLO系统的实时稳定。带有主动眼动跟踪信号的AOSLO视频显示，水平运动的最大运动幅度为0.20角分，垂直运动为0.14角分。随后的实时数字稳定将残余运动平均限制在仅0.06角分（减少了95%）。通过校正眼睛的高幅度、低频漂移，主动TSLO眼动跟踪系统使AOSLO系统能够在比仅使用AOSLO成像系统时更大的运动范围内捕获高分辨率视网膜图像。
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